How to Fix Common Bi Folding Door Repair Problems Bi folding doors allow for the expansion of the interior space and create seamless connections between outdoor and indoor areas. As time passes, they may start to wear out and need repairs. There are many ways to fix your bi-folding doors. https://repairing-bifold-doors22225.qodsblog.com/30522986/5-laws-anybody-working-in-bi-fold-door-repairs-should-know